| // RUN: %clang_cc1 -triple spir-unknown-unknown -emit-llvm %s -o - | opt -instnamer -S | FileCheck -enable-var-scope %s |
| |
| // This is initially assumed convergent, but can be deduced to not require it. |
| |
| // CHECK-LABEL: define spir_func void @non_convfun() local_unnamed_addr #0 |
| // CHECK: ret void |
| __attribute__((noinline)) |
| void non_convfun(void) { |
| volatile int* p; |
| *p = 0; |
| } |
| |
| void convfun(void) __attribute__((convergent)); |
| void nodupfun(void) __attribute__((noduplicate)); |
| |
| // External functions should be assumed convergent. |
| void f(void); |
| void g(void); |
| |
| // Test two if's are merged and non_convfun duplicated. |
| // The LLVM IR is equivalent to: |
| // if (a) { |
| // f(); |
| // non_convfun(); |
| // g(); |
| // } else { |
| // non_convfun(); |
| // } |
| // |
| // CHECK-LABEL: define spir_func void @test_merge_if(i32 %a) local_unnamed_addr #1 { |
| // CHECK: %[[tobool:.+]] = icmp eq i32 %a, 0 |
| // CHECK: br i1 %[[tobool]], label %[[if_end3_critedge:.+]], label %[[if_then:.+]] |
| |
| // CHECK: [[if_then]]: |
| // CHECK: tail call spir_func void @f() |
| // CHECK: tail call spir_func void @non_convfun() |
| // CHECK: tail call spir_func void @g() |
| |
| // CHECK: br label %[[if_end3:.+]] |
| |
| // CHECK: [[if_end3_critedge]]: |
| // CHECK: tail call spir_func void @non_convfun() |
| // CHECK: br label %[[if_end3]] |
| |
| // CHECK: [[if_end3]]: |
| // CHECK: ret void |
| |
| void test_merge_if(int a) { |
| if (a) { |
| f(); |
| } |
| non_convfun(); |
| if (a) { |
| g(); |
| } |
| } |
| |
| // CHECK-DAG: declare spir_func void @f() local_unnamed_addr #2 |
| // CHECK-DAG: declare spir_func void @g() local_unnamed_addr #2 |
| |
| |
| // Test two if's are not merged. |
| // CHECK-LABEL: define spir_func void @test_no_merge_if(i32 %a) local_unnamed_addr #1 |
| // CHECK: %[[tobool:.+]] = icmp eq i32 %a, 0 |
| // CHECK: br i1 %[[tobool]], label %[[if_end:.+]], label %[[if_then:.+]] |
| // CHECK: [[if_then]]: |
| // CHECK: tail call spir_func void @f() |
| // CHECK-NOT: call spir_func void @convfun() |
| // CHECK-NOT: call spir_func void @g() |
| // CHECK: br label %[[if_end]] |
| // CHECK: [[if_end]]: |
| // CHECK: %[[tobool_pr:.+]] = phi i1 [ true, %[[if_then]] ], [ false, %{{.+}} ] |
| // CHECK: tail call spir_func void @convfun() #[[attr4:.+]] |
| // CHECK: br i1 %[[tobool_pr]], label %[[if_then2:.+]], label %[[if_end3:.+]] |
| // CHECK: [[if_then2]]: |
| // CHECK: tail call spir_func void @g() |
| // CHECK: br label %[[if_end3:.+]] |
| // CHECK: [[if_end3]]: |
| // CHECK-LABEL: ret void |
| |
| void test_no_merge_if(int a) { |
| if (a) { |
| f(); |
| } |
| convfun(); |
| if(a) { |
| g(); |
| } |
| } |
| |
| // CHECK: declare spir_func void @convfun(){{[^#]*}} #2 |
| |
| // Test loop is unrolled for convergent function. |
| // CHECK-LABEL: define spir_func void @test_unroll() local_unnamed_addr #1 |
| // CHECK: tail call spir_func void @convfun() #[[attr4:[0-9]+]] |
| // CHECK: tail call spir_func void @convfun() #[[attr4]] |
| // CHECK: tail call spir_func void @convfun() #[[attr4]] |
| // CHECK: tail call spir_func void @convfun() #[[attr4]] |
| // CHECK: tail call spir_func void @convfun() #[[attr4]] |
| // CHECK: tail call spir_func void @convfun() #[[attr4]] |
| // CHECK: tail call spir_func void @convfun() #[[attr4]] |
| // CHECK: tail call spir_func void @convfun() #[[attr4]] |
| // CHECK: tail call spir_func void @convfun() #[[attr4]] |
| // CHECK: tail call spir_func void @convfun() #[[attr4]] |
| // CHECK-LABEL: ret void |
| |
| void test_unroll() { |
| for (int i = 0; i < 10; i++) |
| convfun(); |
| } |
| |
| // Test loop is not unrolled for noduplicate function. |
| // CHECK-LABEL: define spir_func void @test_not_unroll() |
| // CHECK: br label %[[for_body:.+]] |
| // CHECK: [[for_cond_cleanup:.+]]: |
| // CHECK: ret void |
| // CHECK: [[for_body]]: |
| // CHECK: tail call spir_func void @nodupfun() #[[attr5:[0-9]+]] |
| // CHECK-NOT: call spir_func void @nodupfun() |
| // CHECK: br i1 %{{.+}}, label %[[for_body]], label %[[for_cond_cleanup]] |
| |
| void test_not_unroll() { |
| for (int i = 0; i < 10; i++) |
| nodupfun(); |
| } |
| |
| // CHECK: declare spir_func void @nodupfun(){{[^#]*}} #[[attr3:[0-9]+]] |
| |
| // CHECK-LABEL: @assume_convergent_asm |
| // CHECK: tail call void asm sideeffect "s_barrier", ""() #4 |
| kernel void assume_convergent_asm() |
| { |
| __asm__ volatile("s_barrier"); |
| } |
| |
| // CHECK: attributes #0 = { noinline norecurse nounwind " |
| // CHECK: attributes #1 = { {{[^}]*}}convergent{{[^}]*}} } |
| // CHECK: attributes #2 = { {{[^}]*}}convergent{{[^}]*}} } |
| // CHECK: attributes #3 = { {{[^}]*}}convergent noduplicate{{[^}]*}} } |
| // CHECK: attributes #4 = { {{[^}]*}}convergent{{[^}]*}} } |
| // CHECK: attributes #5 = { {{[^}]*}}convergent noduplicate{{[^}]*}} } |